Blac Chyna has now been accepted by the Kardashian family as they believe she has saved Rob, according to People; here the couple is seen in May

Rob Kardashian gained over 100 pounds and was accused of smoking marijuana and mixing it with Sizzurp, according to TMZ.

But then the 29-year-old bad boy of E! started a romance with Blac Chyna and that all changed, much to the relief of his sisters Kim, Kourtney and Khloe, a source told People on Wednesday.

'They literally thought he was going to die and she saved him,' a pal told the publication.

Blac Chyna has now been accepted by the Kardashian family as they believe she has saved Rob, according to People; here the couple is seen in May

At first, however, the sisters did not like their little brother being with the curvy model, who had a baby with Tyga (Kylie Jenner's ex). Cairo is now three years old.

Khloe especially did not like the untion after seeing Chyna drinking with Rob in the kitchen of her Calabasas mansion, which was once owned by Justin Bieber.

The 31-year-old ex of Lamar Odom had let Rob live with her for free for years. 

They feel like Chyna saved him,' added a pal. 'The [Kardashian sisters] have gotten over their issues with Chyna now. They've welcomed her in

                        She already has a child with Tyga, who used to date Kylie Jenner

But now they have come to see the good side, as in Rob has lost weight and is working again - in addition to appearing on Keeping Up With The Kardashians, he is also doing the spinoff Rob & Chyna.

He also is looking forward to being a father this fall.

'They feel like Chyna saved him,' added a pal.

The weekly alleged that it was mom Kris Jenner, 60, who urged the two to tie the knot in July

The [Kardashian sisters] have gotten over their issues with Chyna now. They've welcomed her in.'

UsWeekly added that the two will wed in July.

They had long planned to walk down the aisle at this time, but then agreed to wait until after their child was born in October.

The weekly alleged that it was mom Kris Jenner, 60, who urged the two to tie the knot in July.

It was also claimed that the wedding will be filmed for a reality TV special with E!

And it was even stated that Kylie has become so close to Rob and Chyna that she could be a bridesmaid at the nuptials, which is hard to believe as Kylie and Chyna feuded over social media when the teen was with Tyga.

 It was also claimed that the wedding will be filmed for a reality TV special with E!; here Chyna is seen on Tuesday at LAX